.SF-3901V ..Compatible With Windows 98/98SE/98me/2000/XP. ..2 Axls, 12 Fire buttons/Mouse Function. ..Turbo/Clear Function Setting By Buttons. ..Vibration Feed Back Function Upon Requested. ..Direct-X 7.0a Or Upper Version. ..Dimension (W x H x D): 144 x 48 x 100mm .SF-3902V ..Compatible With Windows 98/98SE/98me/2000/XP. ..3 Axls, 10 Fire buttons. ..Analog Mode. ..Turbo/Clear Function Setting By Buttons. ..The Third Axis Is Controlled By The Roll. ..Mouse Function & Motor On/Off Are Controlled By Switch. ..Vibration Feed Back. ..Direct-X 7.0a Or Upper Version. ..Dimension (W x H x D): 144 x 48 x 100mm More Game Pads and Joystick :  Game Pad - Game Pad (SF-3701U)  Game Joystick - Cobra Stick (JS-2901V)  Game Joystick - Flight Stick (JS-3001)  Game Joystick - Combat Arcade Joystick (SF-2401)  Game Pad - Kids Grip (SF-RF4605)  Game Pad - Kids Grip (SF-4005)  Game Pad - RF Play Grip (SF-RF1801U)  Game Pad - Smart Grip (SF-1101U/V)  Game Pad - RF PRO Grip (SF-RF4201)  Game Pad - Micro Grip (SF-4301)  Game Pad - Micro Grip (SF-4301)  More Game Pad!!spec